Design and performance study of a horizontal wind turbine inside the INVELOX system using modified blade element momentum theory

In previous studies on the INVELOX system, the effect of turbine blades embedded in the venturi section has not accounted. In addition, the design and modeling of an optimal wind turbine in accordance with the geometry and aerodynamic conditions of the venturi section has not been done. Therefore, in this paper, using the BEM (blade element momentum) theory and considering Prandtl's tip and hub loss factors, and also turbulent wake correction, a semi-analytical code has been developed. First of all, an optimal wind turbine according to geometrical and operational assumed INVELOX system is designed. In the continuation, modeling and performance study of geometric parameters of the designed wind turbine has been done. The validation results show that the developed code agrees accurately with the previous experimental, numerical, and analytical results, and therefore the geometry designed for the blades will be reliable. In addition, the application of Glauert and Burton's corrections has been evaluated in this manuscript. Based on the research findings, it is concluded that under the same conditions, Burton's correction yields more conservative results than Glauert's correction. So that assuming 3 blades and a wind speed of 11 meters per second m/s and taking into account Prandtl's tip and hub loss factor, the maximum power coefficient and blade tip speed corresponding to Burton's correction are 0.335 and 7.178, respectively, and corresponding to Glauert's correction, are 0.385 and 7.825, respectively. The provided substrate can be used to optimize the blade shape and structure of the INVELOX wind turbine system.